Improvement in stamping and hammering-machines



Y GEORGE D. CRO'CK ER. a I improvement in Stamping and HammefingMachines. N 125 -17 PatentedApr'l l2- 1872.

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ATENT GEORGE D. GROGKER, OF VIRGINIA CITY, NEVADA.

Specification forming part of Letters Patent No. 125,178, dated April 2,1872.

To all whom it may concern:

Be it known that I, GEORGE D. Onocxnn, of Virginia City, in the countyof Storey and State ofNevada, have invented Improvements in Stamping andHammering-Machines; and I do hereby declare the following descriptionand accompanying drawing are suiiicient to enable any person skilled inthe art or science to which it most nearly appertains, to make and usemy said invention or improvements without further invention orexperiment.

My invention relates to stamping and hammering machines, such as areused for hammering metals, drugs, rock, and other materials orsubstances, either for the purpose of forging or crushing them. Themachine which I employ is a combination of the ordinary stamp and stem,such as is used in quartzmills for crushing ores, with a lever-arm foroperating them in the manner of operating an ordinary tilt ortrip-hammer; and my improvements consist in an attachment or joint forconnecting the lever-arm with the stamp-stem, by which suflicientfreedom of motion is permitted to accommodate the movements of both,While the blow of the hammer or stamp will not affect it.

In order to more fully illustrate and explain my invention, reference ishad to the accompanying drawing forming a part of this specification, inwhich-- Figure l is a side elevation. Fig. 2 shows the joint.

A A represent the frame of a hammering or crushing machine. Bis a shaft,which carries the fly-wheel c at one end, and upon which is keyed a cam,cl. E is a strong arm, which can be made of wood or metal, as desired. Iprefer to use hard strong wood, as being most economical and not liableto crystallize and break, like metal. This arm or lever is supportedupon a shaft, f, or equivalent device, in such a position that its rearend will be depressed by the cam d when the shaft B is revolved. G is astamp or hammer, and H the stem or slide upon the lower end of which itis carried. This stem passes up through a hole or sliding guide in theframe A, by which it is guided, or some other suitable guide may beprovided to keep it in place. The upper end of the stem H passes througha block, I, which is firmly keyed to it. One end or two sides of thisblock is provided with a groove, 9', either entirely around it or uponits upper and lower faces, as desired, or a ball-shaped journal may beemployed. The extremity of the lever-arm E is also provided with asimilar groove, is, directly above the block I, and the two areconnected together by a solid link or metal bar l, so as to form what Icall a double toggle-joint, in the following manner: The opposite endsof the link or barb are made to lit into the grooves j on the ends ofthe block I and lever-arm E, and the whole is bound together by a wireor metal band, m, which passes around the lever-arm, link, and block,and serves to hold the three together, being tightened by keys orsetscrews. By slipping the block I up or down along the stem H, andkeying it where desired, the strikingpoint of the hammer can be variedaecordin g to the size of the work to be operated upon, withoutlessening the length of stroke.

Various other joints or connections might be devised for uniting thelever-arm with the stem or slide but 1 have presented the above as asimple construction of a joint for the purposes of this specification.

By this means I combine the direct lip-anddown stroke of the ordinarystamp-mill with the lever movement of the trip-hammer machine, and amenabled to drive the hammer or stamp with much less expenditure of powerand at greater speed than the ordinary stampmachines.

In order to prepare the stampers for the purposes of quartz-mills, itwill only be necessary to surround the stamp or stamps with a mortarprovided with screws. As many leverarms and stamps can be driven fromthe same shaft as desired.

This hammering-machine can also be used to advantage by gold-heaters,instead of the ordinary hand-hammer.

Having thus described my invention, what joint or joints, substantiallya s and for the I claim, and desire to secure by Letters Patpurposeabove described.

cut, is- In witness whereof I hereunto set my hand 1. The link or bar I,in combination with the and seal. band m. substantially as and for thepurpose GEORGE D. CROCKER. [L. s.] above described. Witnesses:

2. The lever-arm E, in combination with the W. F. BINGHAM, stamp G andstem H, when connectedby a A. T. DEW'EY.

